Hangar 9 P-40 Warhawk Assembly Manual page 10

Section 2: Attaching the Wing

Step 4
Position the belly pan onto the wing. Trace around the
belly pan using a felt-tipped pen.

Step 5
Remove a strip of covering that is 1/8" wide inside the
lines drawn in the previous step. Use care not to cut into
the underlying wood, weakening the wing structure.
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
Step 6
Use medium CA to glue the belly pan to the wing.